fix genshin

plugins/word_bank/model.py

@@ -209,3 +209,4 @@ class WordBank(db.Model):
             if q:
                 return [(x.answer, x.format.split("<format>")[:-1]) for x in q]
         return False
+

plugins/word_bank/word_hanlde.py

@@ -63,6 +63,8 @@ async def _(bot: Bot, event: GroupMessageEvent, state: T_State):
     if not r:
         await add_word.finish("未检测到词条问题...")
     problem = r.group(1).strip()
+    if not problem:
+        await add_word.finish("未检测到词条问题...")
     answer = msg.split('答', maxsplit=1)[-1]
     if not answer:
         await add_word.finish("未检测到词条回答...")